Superfish Aqua-Flow 200 Internal Filter 400L/H Compact internal filter providing optimal filtration and clean, clear water. Ideal for coldwater and tropical aquariums between 100 and 200 litres. Features an 'Easy-Clean Click system' for easy maintenance. Dual action filter medium with activated carbon removes organic contamination, chemicals and dyes from the water. 100% open structure foam provides optimal filtration and bacterial growth area. Adjustable flow rate (200-400 litres / hour).